40205135245 has 12 divisors (see below), whose sum is σ = 53030906460. Its totient is φ = 29240097920.

The previous prime is 40205135233. The next prime is 40205135273. The reversal of 40205135245 is 54253150204.

It can be written as a sum of positive squares in 2 ways, for example, as 16411147236 + 23793988009 = 128106^2 + 154253^2 .

It is not a de Polignac number, because 40205135245 - 2²⁹ = 39668264333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33226780 + ... + 33227989.

It is an arithmetic number, because the mean of its divisors is an integer number (4419242205).

Almost surely, 2^40205135245 is an apocalyptic number.

It is an amenable number.

40205135245 is a deficient number, since it is larger than the sum of its proper divisors (12825771215).

40205135245 is a wasteful number, since it uses less digits than its factorization.

40205135245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66454796 (or 66454785 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 40205135245 its reverse (54253150204), we get a palindrome (94458285449).

The spelling of 40205135245 in words is "forty billion, two hundred five million, one hundred thirty-five thousand, two hundred forty-five".